Watertight watch



W. SCHMITZ El AL July 8, 1952 WATERTIGHT WATCH v I, iA/l ENTORS:

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WATERTIGHT WATCH Filed Dec. 11, 1946 2 -.gm-y 2 ,4 %NEK Patented 'July 8, 1952 OFFICE Werner Schm itz. an

d Jakob Schneider,

qrenchen, Switzerland Application December 11, 1946, Serial No. 715,446 In Switzerland April 26, 1946- means may be employed for achieving this object. "For instance. a pivot may be provided having a head forced by a spring I against a packing provided between the pivot head and the bottom of the watch case. This pivot and the packing would be preferably sunk in a thicker part on the outer surface of the bottom and held in place by a star-shaped spring fixed to the'end .of the pivot and having a bent-arm made to cooperate with the regulating lever.

The water-tight device may comprise a pin pivoted in the cock and having a head extending through the outer bottom of the watch case, a packing being provided to form a watch-tight joint. In this case, the pin would be fitted with a cam, acting, against the constraint of a spring,

on the regulating lever.

As a further modification of the invention, the water-tight device may comprise a stopper screwed into the bottom, which closes an aperture through which the regulating mechanism of the movement of the watch can be reached.

The attached drawing represents, by way of example and to the extent necessary to make the description of the invention sufliciently clear,

three embodiments of the water-tight means according to the present invention.

Figs. 1, 2 and 3 illustrate a first embodiment of the invention;

Fig. 1 shows a section along line I-I of Fig. 3 of a device according to the invention;

Fig. 2 is a fractional plan view;

Fig. 3 is a view of the regulator mechanism of the watch;

Fig. 4 is a part sectional view along the line IV-IV of Fig. 6 of a modified device according to the invention in condition for adjusting the regulator;

Fig. 5 is a sectional view of the outer bottom of the closed case of a watch equipped according to Figs. 4 and 6;

Fig. 6 is a plan view from above of the regulator mechanism shown in Fig. 4;

Fig. '7 is a view, in section along the line VlIVlI of Fig. 8, the latter being a plan view. with a part of the bottom broken away, of a further modificationof a water-tight device according to the invention;

Fig,. 9 is a bottom view of the device according to Figs. 7 and. 8.

Like parts are designated by like numerals in the diiferent figures. v

Referring to Figs. 1, 2 and 3, numeral I desigates the bottom of a water-tight'watch case; numeral 2 designates the regulator cock to which the device is attached, pin 3 being pivoted in the cock and having a slit at its outer end. It is embedded in a water-tight packing .l 5 extending through the, bottom and lining the joint between the' 'inside of the hole in the bottom and the cylindrical surface of the pin. The latter is provided with a cam '4 resting on the bridge and actuating the regulating lever 5 against the tensionofa spring 6. The required regulation of the position of the lever is effected by turning the pin 3 with a screw-driver. The water-tight device consisting of the pin 3 and the packing [5 permits regulation of the watch through the bottom, 1. e. without having to open the case. Because of the coordinated positions of the lever and slit in the pin head, the exact position of the lever can be determined from the outside, a graduated scale being provided on the outside of the bottom.

In the embodiment shown in Figs. 4-6 a counter-sunk partly threaded hole 8 is provided in the bottom I, in which a stopper I4. is inserted, compressing a packing-ring [3 on a countersunk seat, when the watch is in use. This is shown in Fig. 5.

that has to be done is to unscrew the stopper l4 and to introduce a key 1 in its place, fitting over the screwhead 9 fixed in the bridge, the former serving as a pivot. The key comprises a collar [0 having a notch I I accommodating the tail-end of the regulating lever 5. The pointer l2 indicates the position of notch II on a graduated scale concentric with the screw-head 9.

In the embodiment of the invention shown in Figs. '7, 8 and 9, the bottom of the case is designated by numeral I, the cock by 2, and the lever by 5. Case member I has a hole for receiving shank 20 of a pivot member having a collar por tion 2| and a square-head 22 for unrotatably supporting a star-shaped string 23 forming the hub portion of an actuating member 26, which can be best seen from Fig. 9. Three radial arms 24 forming part of portion 23 are bent so as to bear against the bottom I of the watch-case,

thus squeezing the packing 25 beneath the collar Should it be required to regulate the lever, all

portion 2| into a corresponding seat in the bottom, making the latter sufliciently water-tight. The end of arm 26 is bent oppositely to arms 23 and is provided with a slot 2'! fitting over the tailend of the regulating lever 5.

In this way, the device for actuating the watch regulator is permanently pressed to the bottom. It has the advantage of being entirely'independent of the movement, and it remains permanently water-tight independently of the condition of the packing, barring, of course, destruction of the latter.

What we claim is:

l. A water-tight watch, comprising a regulator having an arm for setting it, a case member having an inside and an outside and separating said. regulator from the outside, a. pivot member extending through said case member and having, a collar at the outside of said case member, a packing interposed between said collar and said case member, an actuating member engaging said arm and having a hub portion madefast on said pivot member inside of said case member, said hub portion comprising resilient means resting on the inside of said case member for forcingsaid collar against said case member and compressing said packing.

2. A Water-tight watch, comprising a regulator having an arm for setting it, a case member hav ing an inside and an outside and separating said regulator from the outside, a pivot member extending through said case memberand having a collar at the outside of said case member, a pack ing interposed between said collar and said case member, an actuatingmemb'er engaging said arm 35 and having a hub portion made fast on said pivot member inside of said case member, said hub portion comprising resilient arms extendingraand extending through said case member and having a collar portion, a packing interposed betweensaidcollar portion and said case member, and resilient means forming part of said actuati-ng member and. being interposed between said pivot member and said case member for forcing the former against the latter and compressing said packing.

WERNER SCHMITZ.

JAKOB SCHNEIDER.

REFERENCES I CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 7 211,584 Parker Jan.. 21, 1879 300,088 Kistler June 10, 1884 1,300,278 Kern l Apr. 15, 1919 FOREIGN PATENTS Number Country Date 56,178 Switzerland June 16, 1911 179,159 Switzerland Jan. 2, 1936 203,011 Germany Oct. 16, 1908 

